Neuroscience seeks to understand brain activity and its pathologies but still struggles to extract electrical neuronal information in a non-invasive way. Non-invasive detection methods such as electroencephalogram [1]} and magnetoencephalogram [2]} measure electric potential and magnetic fields on the scalp and reconstruct the location of the electric sources. Unfortunately, the sensitivity of these methods is limited for in-depth activity sources [3]}, [4]}. On the other hand, conventional functional magnetic resonance (fMRI) detects \(T_2\)  and \(T_2^*\)  changes generated by blood oxygenation levels on the brain (BOLD contrast) [5]}. This technique presents good spatial resolution, but it measures neuronal activity indirectly, and the hemodynamic response function limits its temporal resolution [6]}.
